Google Play typically requires refund requests to be made within the first two hours of purchase. For a refund, click on this link:

https://support.google.com/googleplay/answer/134336?hl=en

Then click on "Request a call," "Chat with us," or "E-mail us" at the bottom of the page.

But please e-mail help@weplaydots.com if you aren't successfully refunded in a reasonable amount of time.